Machine-tool



M. M. CORY.

V MACHINE TOOL.

-APPLlcATloN FILED sEPT.27.1919.

Patented NOV. 8, 1921.

Witnessz shape and extending UNITED STAT MARCUS M. CORY, OF FOND lPATENT OFFICE.

DU LAC, WISCONSIN, ASSIGNOR TO GIDDINGS & LEYIS MACHINE TOOL COMPANY, OF FOND DU LAC, WISCONSIN, A CORPORATION VOF WIS- CON SIN Appncatioaiued septeinber 27, 1919.

To all fai/10m mag/ concern Be itrlnown that I, MARCUS M. Corr, a citizen of the United States, residing at F ond du Lac, in the county of Fond du "Lac and Stateof Wisconsin, have invented certain new and useful Improvements in Machine-Tools, of which the following is a specification.

This invention relates to boring, and milling machines, or the like., and refers more particularly to a sfo-called table-type horizontal boring,v drilling and milling machine, althoughthe invention may be applied to boringmills, milling machines and other machines in which the essential features of the invention are .foundadvantageous.

VMore particularly the inventionrefers to the saddle lfor supporting the platen of machinesof this character andto means for mounting or supporting the'saddle and for making any necessary adjustments thereof' in the original assembly or to take up Wear on the Working surfaces. y

The objects of the invention are toY eliminate any deflection of the platen at either of itsl extreme positions at thejsides or" the main bed or; knee of the machine so asv to avoid inaccuracies in the Workdue tothe distortion or misplacement ofthe saddleor platen caused by the Weight when the platen is at one extreme end ,of thesaddle; and to getthis result by simple, economical Vand efficient means. e i v Y I accomplish these objects by the use of a saddle Yhaving anv overha-nging extension atv each end, the extension being'of a truss down to sec-ure an ad-V ditional bearing near .the foot of thebed.l

Referring to the accompanying drawings, Figure 1 is an end view and platen ot' 'a machine tool illustra-ting the application'of my invention hereto. Fig. 2 is a l. F ig. 3 is justng gibs.

Y In the embodiment of my invention selected for illustration, 10 indicates the longitudinally extendingstationary bed of atableftype horizontal boringf drilling, and milling machine. saddle 11 is longitudinally slidable on vrthe hed 10 andcarri Sla platen 12 transversely lslidable on Ways 13. In the devices of the an enlargedI detail of the ad- Specicaton of Letters Patent.

Vcarried thereby Y the Ways for the drilling.

Vthe platen comprising va stationary taper asV clearly `indicated in of the bed, saddle side view of the parts shown in Fig.v

A transversely extending` MACHINE-Toor..

Patented N ov. l8, 1921. seriai No. 32eme.

p rior lartl the saddle 11 terminates substantially at the sides of the bed l() or has only a slight overhang.V lVhen the platen 12 has been moved transversely to a. position Where the combined overhanging` Weight ciI the platen itself and of a heavy piece ot Work imposes a severe strain on platen, the resilience or' the considerable deflection of to occur impairing the accuracy ofthe Work. y improved saddle 11 is supported upon Ways 14 on the top of the bed 10 and carries suitable retaining gibs 15 engaging the nnder side of the outer he yupper portion of the saddle extends beyond the sides of the bed 10 forming on each side triangular trussshape extensions 16 yeach comprising a horizontal top member 17, an inclined strut 18 and a vertical connecting portion or tension memberlQ.

Horizontal members 28 extend the lower corners of the trusses 16 on the. same side of the bed, to unite the AWhole overhanging portion as a rigid unit, and to form a suitable bearing for slidable engagement with Ways 20 machined on the sides of the bed near the bottom. l Each cross piece 28 may be provided With suitable means forfengaging the Ways gib 21 bolted to the cross piece 28 and aslidable gib-22 havin;r

metal will allow a. machined face 23 adapted to enga-2te vthe Way- 20. The gibs 21 and 22 have a slight F ig. 3 and any suitable means may be provided for shifting them relative to each otherto bring the face 2.3 into the proper engagement with theway 20 and support the truss'16. I have illustrated screws 24 holding the gib 21 in place; on thetruss 16 and'bolts 25 having heads slidable in the jT-'shalpedslot 26 adaptedtobe drawnl tight by suitable nuts 27.

vVhile I have illustrated the ways 20 as extending in vertical planes, it is obvious thatJ the inclination of these Ways may be varied over aconsiderable range to suit the requirements of various conditions of service. As the outer ends of members 17 are restrained fromswinging sidewise by thev bet/Ween' .f

It will be apparent that the upper portion of the saddle 11 is in tension under allY normal conditions o-f positive loading while the strut 18 is incompress-io-n and the vertical member 19 will be under enough tension' to prevent the foot of the truss from moving down on the way 20. The upper surface of the member 11 therefore will form a continuous support from end to end whose ri- Y tion thereof is deemed unnecessary.

I 1 subjoined claims purposes of ing,

While I have illustrated and described in detail the specific embodiment oft-my invention at present preferred it should be duly understoodthat the description is only f or illustration and `many variationsv and modifications will naturally occur to those skilled in the art. 1 aim in the to cover all such legitimate modifications and variations.v

I claim as my invention p n 1. A machine of the class describedhavin combination, a longitudinally extending bed, a saddle longitudinally 'slidable on said a lateral projection,

ing' a pair of spaced bed and having a central portion an said projection compristriangular trusses each having a horizontally extending top member alined with said central portion, a downwardly extendinginember adjacent the side of said bed, a strut joining the ends of said outwardly and Vsaid downwardly extending members, and a cross piece joining the lowerA ends of said downwardly extending members to unite vsaid trusses into a rigid integral unit.' A

2. VA machine of the class described having,in combination, a longitudinally extending bed, a saddle'longitudinally slidable on saidbed and having a central portion andA a lateral pro 'ection, said projection comprising a pair of spaced triangular trusses eachl having a horizontally -alined with said central portion, a downwardly extending member adjacent the side of saidbed, a strut joining the ends ofsaid outwardly vand said downwardly extending members, and a cross'piece joining the' lower ends of 'said downwardly extending members' toy-,unitesaid'trusses'into a rigid integral unit, and 'vertical guidev surfaces on the sides 'of' said bed near the -bottomthereof slidably engaging and supporting said cross piece.,

3. A machine of the class describedhaving, in combination, a longitudinally extendthe work carried on the ing in combination.,

Y ner .of said truss being' slidably engagedand d slidable saddle on said bed,

` ing, in combination, al longitudinally extend- Vdownwardly projecting portions on 'each extending top member Y ing bed having a pair of spaced ways on its upper surface and another pair of spaced ways on'its sides spaced from the top of the bed, alongitudinally slidable saddle on said hed comprising a central-portion'supported by said 'upper ways, and-an overhanging poi'tionon each side extending outwardly in alinement with said central :portion and Y downwardly adjacent the sideof said bed for supporting engagement with said lower ways. A'. s Y et. The combination recited'in claim?) in combination with a pairf of adjustable gibs carried by the downwardly extending portions of said overlianging vportions whereby the distribution 'of stress and weight between said upper` and lower ways and the various portions of said saddle may be prop-v erly adj usted.

A machine of the class describedlhava longitudinally extending bed, a saddle longitudinally slidable on said bed, and a platen transversely slidable `on said saddle, said platen'projectinglaterally beyond saidbed, said saddleV having a pair of laterally projecting extensions form- Y ing ways for vsaid platen, each extending way being reinforced by a downwardlyxextcnding and a diagonally" extending member forming a triangulartruss, the lower 'and inner coi' 95 supported vby said bred. Y

6. A machine of the class described" having 'in combination, a bed, a longitudinally said saddle-extending transversely -beyond said bed, and a -plurality of abutting surfaces Aon said bed adapted to engage said saddlev oni each' side of the center line of the machine, comprising a pair of ways at theitop of theLbe'd-havingV horizontal main surfaces, and pair-'of ways' below said 'first mentioned ways,-`-`having main surfaces at an` angletothe'horizontal.`

7 A machine' of the Aclass described Vhaving, approximately rectangular bed, a pair of spaced ways .on said bed', a transverselyextending saddle slidable on said ways,s a`id saddley having outwardly projecting and side of the bed, a second-pair of ways on theV sides of the bed vertically spaced below said Y first 'mentioned pair. of ways, theV downi" wardly extending portions of said saddle being engaged and supported by said second pair of ways. v

8. niachine of theiclassdescribed havj ing, in combination, a longitudinally extend-iV y ing bed, a saddlellongitudinally Vslidable on said bed and extending transversely bey-ond-Y said bedon both sides, said'saddle comprising a horizontally extendingtop prtionand a truss integrallyv :united with saidtop'por'- tion and having a; laterally v'extending Ymember alinedfwith said horiz ntal portion and 130' l other point spaced slidable a member extending downwardly for supporting engagement with the lower portion of the side of said bed. A

9. A machine of the class described having, in combination, a stationary base having substantially vertical side portions and a movable supporting member horizontally on said base and having an overhanging projecting portion, said overhanging portion extending outwardly and also extending downwardly beside said stationary base in sliding and supporting engage` ment therewith near the bottom.

10. A machine of the class described having, in combination, a stationary base having substantially vertical sides and a laterally projecting' support horizontally slidable on said base and engaging said base near the bottom of its vertical side and also at anvertically a substantial distance above the bottom.

ll. A machine of the class describedhav- Y ing, in combination, a stationary base, a triangular supporting member projecting laterzlly from one side of said base and hori- 'stantially vertically adjacent slidable thereon, the adjacent side triangular member extending subthe side of said base, and means on said base slidably engaging and supporting said triangular support ing member adjacent the ends of its vertically extending portion.

12. A machine of the class described having, in combination, a base provided with ways along its top and also having ways with upright working faces at its opposite' sides near its bottom, a saddle slidably mounted on said top ways and having dezontall of sai pending portions at opposite sides of said base provided with faces complementary to the working faces on said lower ways to slidein contact with the latter, and a platen slidably mounted on said saddle, said depending portions of the saddle cooperating with said lower ways on the base to prevent deflection of the platen due to Weight at extreme ends of said saddle.

In testimony whereof, I have hereunto set my hand.

MARCUS M. CORY. 

